| 1 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Jun 2025 |
| 2 | Kebo Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Jun 2025 |
| 3 | Kennedy, R. R. Production, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Jun 2025 |
| 4 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Mar 2025 |
| 5 | Kerr-McGee Oil & Gas Onshore LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2017 |
| 6 | Keystone Petroleum GP LLC | Irving, TX 75039 | Oil & Gas Operator | May 2012 |
| 7 | Kidd Johnson Oil & Gas | San Angelo, TX 76904 | Oil & Gas Operator | Feb 2013 |
| 8 | Kidd Johnson Oil & Gas, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Jun 2025 |
| 9 | Kimbell Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 10 | Kinder Morgan Production Co LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 11 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 12 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Jun 2025 |
| 13 | Kodiak Productions LTD | Big Lake, TX 76932 | Oil & Gas Operator | Mar 2014 |
| 14 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | Jun 2025 |
| 15 | KVL Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Jun 2025 |